Mike was standing on the roof of a house he was building, he looked down and grabbed the airhose that was attached to the nail gun and flipped it up into the air, like he had done a thousand times before that. Lightning quick, Mike shot his hand out to grab the nail gun and get to work. There was the distinct pop of the nail gun and a sharp pain in his chest. Mike had grabbed the handle of the nail gun and depressed the trigger, the nail shot out of the gun, into his lung and into his heart.